HID:LIST - list arrays

Liste des GroupesRevenir à cl awk 
Sujet : HID:LIST - list arrays
De : cosmogen (at) *nospam* gmail.com (digi_cs)
Groupes : comp.lang.awk
Date : 17. Oct 2024, 06:20:31
Autres entêtes
Organisation : SunSITE.dk - Supporting Open source
Message-ID : <67109f80$0$705$14726298@news.sunsite.dk>
Hello!

FYI

@include �github.com/digics/UID10/uid.lib�

LIST = hid::get( �LIST� )


An array (A) in AWK can represent a list of unique items with an undefined order.
To introduce the concept of an array with a defined sequence of its indexes (items),
we need to specify this sequence in a subarray A[LIST] as a simple list:

The element A[ LIST ][ "" ] stores the index of the first item in the list:

# items of A: first, next and last:

A[ �LIST� ][ �� ] = �first�
                 [ �first� ] = �next�
                [ �next� ] = �last�
                [ �last� [ = ��
[ �first� ]...
[ �next� ]...
[ �last� ]...

Thus, instead of a for-in loop for array A, we use:

i = ��
while ( �� != i = A[ LIST][ i ] )

# process A[ i ]

or

for ( i = ��; �� != i = A[ LIST ][ i ]; )

# process A[ i ]

At the same time, we can still work with the main array in a for-in loop � with one caveat:

for ( i in A )

if ( i in HID )

continue # this is hid (LIST)

else

# process A[ i ]

In case a bidirectional list is needed, another subarray A[LIST][LIST] is created
within the subarray A[LIST], where the items are listed in reverse order,
 and the element A[LIST][LIST][""] stores the index of the last item in the list.

best regards)


--------------=  Posted using GrabIt  =----------------
------=  Binary Usenet downloading made easy =---------
-=  Get GrabIt for free from https://www.shemes.com/  =-


Date Sujet#  Auteur
17 Oct 24 o HID:LIST - list arrays1digi_cs

Haut de la page

Les messages affichés proviennent d'usenet.

NewsPortal